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Effect of Ho on Properties of Sintered NdFeB Permanent Magnet AITranslate

Hunan Rare Earth Metal Material Research Institute;Hunan Rare Earth Metal Material Research Institute;Hunan Rare Earth Metal Material Research Institute;Hunan Rare Earth Metal Material Research Institute;Hunan Rare Earth Metal Material Research Institute
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

(Pr-Nd)(28.8-x)D(y2)HoxFebalNb(0.2)B(1.05) sintered NdFeB permanent magnet was prepared on the massproduction line,and the effects were studied of Ho replacement for part of Pr-Nd metal on the magnetic properties,microstructure and corrosion resistance of the permanent magnet.The results show that the growth of Nd2Fe(14) B columnar crystal in the alloy can be promoted after partial Pr-Nd is substituted by Ho,and Nd-rich phase in the form of sheets more uniformly distributes in the crystal grains of Nd2Fe(14) B matrix phase,resulting in dense microstructure,increased intrinsic coercivity but decreased remanence,improved corrosion resistance and reduced weight loss of the permanent magnet.The best comprehensive properties are as follows:remanence(Br)of 1.237 T,intrinsic coercivity(H(cj))of 1.76MA/m,the square degree of J-H demagnetization curve(Hk/H(cj))of 0.99,achieved under the conditions of 3% Ho addition.

KeyWords AITranslate

sintered NdFeB permanent magnet Ho microstructure magnetic property corrosion resistance

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Basic Information:

DOI:

Chinese Library Classification Number:TM273[一般工业技术—材料科学与工程]

Citation Information:

(Pr-Nd)(28.8-x)D(y2)HoxFebalNb(0.2)B(1.05) sintered NdFeB permanent magnet was prepared on the massproduction line,and the effects were studied of Ho replacement for part of Pr-Nd metal on the magnetic properties,microstructure and corrosion resistance of the permanent magnet.The results show that the growth of Nd2Fe(14) B columnar crystal in the alloy can be promoted after partial Pr-Nd is substituted by Ho,and Nd-rich phase in the form of sheets more uniformly distributes in the crystal grains of Nd2Fe(14) B matrix phase,resulting in dense microstructure,increased intrinsic coercivity but decreased remanence,improved corrosion resistance and reduced weight loss of the permanent magnet.The best comprehensive properties are as follows:remanence(Br)of 1.237 T,intrinsic coercivity(H(cj))of 1.76MA/m,the square degree of J-H demagnetization curve(Hk/H(cj))of 0.99,achieved under the conditions of 3% Ho addition.

quote

GB/T 7714-2015 [1] YAO Mao-hai, WANG Chuan, LIU Yu-hui, et al. Effect of Ho on Properties of Sintered NdFeB Permanent Magnet[J]. Rare Metals and Cemented Carbides, 2016(3): 51-55.
MLA [1] YAO Mao-hai, et al., "Effect of Ho on Properties of Sintered NdFeB Permanent Magnet." Rare Metals and Cemented Carbides, no. 3, 2016, pp. 51-55.
APA [1] YAO Mao-hai, WANG Chuan, LIU Yu-hui, CHEN Yun-zhi, & SU Zheng-fu. (2016). Effect of Ho on Properties of Sintered NdFeB Permanent Magnet. Rare Metals and Cemented Carbides(3), 51-55.
IEEE [1] YAO Mao-hai, WANG Chuan, LIU Yu-hui, CHEN Yun-zhi, and SU Zheng-fu, "Effect of Ho on Properties of Sintered NdFeB Permanent Magnet," Rare Metals and Cemented Carbides, no. 3, pp. 51-55, 2016. keywords: {sintered NdFeB;permanent magnet;Ho;microstructure;magnetic property;corrosion resistance}